Even though manufacturers and retailers can forecast aggregate demand with some certainty, forecasting accurately how that demand will be distributed among the many SKU's they sell is difficult.

尽管制造商和零售商能够有一定把握地预测总需求，但要准确地预测需求将如何在他们销售的众多 SKU 中分配是困难的。

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Hotels, airlines and cruise operators say they are dropping prices at the last minute because of lower demand as well as difficulty in forecasting sales.

酒店、航空公司和邮轮运营商纷纷表示，之所以在最后时刻降价是因为需求减弱，而且难以预测销量。

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The company started by envisioning the business system as a whole and chose to focus on a very few high-leverage points: distribution, demand forecasting, and customer service.

公司一开始就将公司看成是一个系统，并专注于为数不多的几个高影响力点：配送，需求预测，和客服。

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Those who practice the fine art of forecasting supply and demand for the oil industry had a banner year.

FORBES: Oil Not Going To $50 Any Time Soon

Perhaps one of the most representative companies of the global economies, Caterpillar posted fourth quarter earnings before the bell on Thursday, more than quadrupling profits and forecasting a better 2011 on continued demand from emerging markets and continued upward momentum in commodity prices.

FORBES: Caterpillar More Than Quadruples Profits On Global Economic Recovery

In addition, as Australia-based Forbes contributor Tim Treadgold pointed out, iron ore prices are falling, with both BHP and Rio Tinto forecasting lower prices in the future as supply rises to meet demand.

FORBES: America's Richest Women Got $550 Million Richer As Wal-Mart Hit 10-Year High